Go to the supermarket to scan the registration code and show your health code?

Yes, no matter where you go, you can know this health code anytime and anywhere, as long as you bring your mobile phone and your ID card, because if you go to the supermarket, you have to brush the QR code to get in. If you don't recognize the QR code, you can't get in without scanning the health code, so we will know where you have been when we go out with our mobile phone.